Microcontroller homework for week 11 1. 2. I would choose schematic C because the Fly-Back on C is with zener-diode and on the output two diodes are used, witch are placed correctly as are the resistors, so the schematic would function as required.
Ülekande omaduste järgi: lineaar- ja mittelineaarkomponendid. Võimenduse järgi: passiivsed ja aktiivsed komponendid Rakenduse järgi: nõrkvoolu ja jõuelektroonika komponendid Keskkonna järgi: vaakum (elektronlambid, kineskoobid), plasma e.gaaslahendus (indikaatorid, valgustid, kuvarid), tahkis (pooljuhtseadised) Pooljuhtmaterjali järgi: Si, GaAs, SiC jt. ühendid 1.1. Passiivkomponendid a) Takistid (resistors) Takistuse mõiste: staatiline takistus R = U/I ja diferentsiaalne takistus r = du/di. Kasutusala: voolu piiramine, voolumuutused pingemuutusteks, pingejagurid jne. Liigitused: - Püsi- ja muuttakistid (reguleertakistid e. potentsiomeetrid ja seadetakistid) - Lineaartakistid R = r ja mittelineaartakistid R r (termistor R = f(tº), varistor R = f(U)) Tingmärgid - Põhiparameetrid: Nimitakistus vastavalt reale E6, E12, E24, ... või E192: E6 (1,0; 1,5; 2,2; 3,3; 4,7; 6,8x10n);
2.3V and quantized voltage with the output code word equal to 011101012 using an 8 bit ADC with 5V reference? 011101012 = 117 Correspond to 5V * 117/256 = 2.2852V Error = 2,3V – 2.2852 = 0,0148V Question 5 A digital multimeter is designed to have a readout with four decimal digits. How many bits will be required in its ADC? MAX = 9999 213 = 8192 214 = 16384 (too many digits) 13 Bit will be required in ts ADC. Question 6 Draw a circuit diagram of a 2 bit flash ADC using only resistors, comparators and NAND gates. Question 7 Given the following dual-slope ADC: a) How long would it take for this ADC to complete the run-up phase? 𝑅𝐶 𝑡𝑢𝑝 = − ∙ 𝑉𝑜𝑢𝑡 = −400𝜇𝑠 𝑉𝑖𝑛 The run-up phase takes 400 μs. b) How long would it take for this ADC to complete the run-down phase?
USB siinil on suured viivitused andmete päringu saatmisel ja andmete saatmise alustamisel. Näiteks Firewire siini andmeedastuskiirus on küll ainult 400 Mb/s (80 MB/s ehk 10 MB/s väiksem kui USB 2.0-l), tagab Firewire suurema reaalse edastuskiiruse. Järgnevad muudatused Järgnevatel aastatel on USB spetsifikatsioonis tehtud mitmeid muudatusi: 2000. aasta oktoobris lisati minipistik (Mini-B Connector) Vigade parandus 2000. aasta detsembris Pull-up/Pull-down Resistors Engineering Change Notice (ECN) 2002. aasta mais Interface Associations ECN 2003. aasta mais Rounded Chamfer ECN 2003. aasta oktoobris Unicode ECN 2005. aasta oktoobris, ECN täpsustab, et read on kodeeritud UTF-16LE kasutusega Inter-Chip USB Supplement: teade lasti välja 2006 aasta martsis On-The-Go Supplement 1.3: teade lasti välja 2006 aasta detsembris USB On-The-Go võimaldab ühendust kahe USB seadme vahel ilma eraldiseisva USB vastuvõtjata.
Stepper Motors 161 DC Motors 180 Brushless DC Motors 184 Tradeoffs between Motors 198 Motor Torque 201 vi Contents 8 EMI 203 Ground Loops 203 ESD 208 9 High-Precision Applications 213 Input Offset Voltage 215 Input Resistance 216 Frequency Characteristics 217 Temperature Effects in Resistors 218 Voltage References 219 Temperature Effects in General 221 Noise and Grounding 222 Supply-Based References 227 10 Standard Interfaces 229 IEEE 1451.2 229 4-20 ma Current Loop 231 Appendix A: Opamp Basics 233 Four Opamp Configurations 233 General Opamp Design Equations 237 Reversing the Inputs 238 Comparators 239
Koffka - geograf. ja käitumislik keskkond. Köhler - tasakaal, pregnantsuse seadus(mentaalne kogemus organiseeritud lihtsaimal viisil, mis antud tingimustes on võimalik). taju konstantsus. insight transpositsioon. Lewin - väljateooria. That branch of physics that studies how energy distributes itself within physical systems. Some systems energy can move freely (solar systems) and in some systems energy must pass thru wires, consensers, resistors etc(electric circuit). However energy will always distribute itself in the simplest most symmetrical way possible. According to gestaltspsy. Brain is physical system whose activity could be understood in terms of field theory. eluruu. sub reaalsus. Motivatsioon ja grupidünaamik. Teadvustamata materjali ei saa mõjutada inimese käitumist <> psühhoanalüüs. Vaimuhaigused Pinel Vaimuhaigused on päriselt olemas.
2) 3)Figure presents a general form of a diff amp that is termed a long-tailed pair because R E is called a tail resistor.It has two inputs:U1 and U2.Because there are no coupling or bypass capacitors, the input signals can have frequencies all the way down to zero, equivalent to dc, and the amplifier has a broad midband and high stability.The output signal is the voltage on the load connected between the collectors.Ideally, the circuit is symmetrical with identical transistors and collector resistors. 4)dc,voltage device.5)analog. 6)ADVANTAGES:Because there are no coupling or bypass capacitors, the input signals can have a wide range of frequencies and the amplifier has a broad midband and high stability.Other benefits are high amplification and low clipping.MAIN FEATURES:Signal range,offset and drift,kind of supply. 7)To obtain higher voltage gain of an amplifier,one can connect two stages.This is called
jagamise viisid Koakskaabel (coaxial cable) – isoleermaterjalist kaabel (vaskvõrk, kaetud musta isoleermaterjaliga), mille sees on vasktraat. Ümbrus kaitseb nõrka signaali, mis sees kulgeb. Mitme antenniga saab ühendada kasutades cable splitterit. 45. Mille poolest erinevad jagurid (Splitter) ja suundhargmikud (Directional Coupler) The way we define it, a coupler (usually) has four ports, uses no "internal" resistors and has one isolated port that is terminated. A splitter is (usually) a three-port, is non-directional, and requires internal resistors (like a Wilkinson) and has no isolated port. 46. Milleks kasutatakse dupleksfiltreid Võtab sisse nii Tx kui ka Rx üheselt (in and out) - Enable Tx and Rx separation 47. Milleks kasutatakse kombainereid (Combiner) Enable DAS sharing between two or more base stations in the same frequency band
Circuit Output LED OUT configuration Internal OUT 24 VDC Circuits COM (–) Note When using the OUT01000 or OUT01001 as a pulse output, connect dummy resistors as required to set the load current to 0.1 to 0.2 A. If the load current is below 0.1 A, the ON-to-OFF response time will become longer and high-speed pulse will not be output. On the other hand, if the load current is above 0.2 A, the transistor may generate heat and components may be damaged. 28
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